Punching-machine.



J. vR. DEAN & A. W. HOLMBBRG.

PUNGHING MACHINE.

APPLIOATION FILED NOV.'22, 1913.

1,1 12,601 Patented 0ct.6,1914.

2 SHEETS-SHEET 1.

THE NORRIS PETERS CO.. PHOTO-LITHQ. WASHINGTON. D. C.

I. R. DEAN & A. W. HOLMBERG.

PUNGHING MACHINE.

APPLICATION FILED NOV. 22, 1913,

1, 1 1 2,601 Patented Oct. 6, 1914.

2 SHEETS-SHEET 2.

THE NORRIS PETERS Co..P:-mm-LI1H0.. WASHINGTTIN. D. c.

nn'rrnn STATES raTnnT onnicn JOHN R. DEAN, OF NORTH GIRABD, PENNSYLVANIA, AND AUGUST W. HOLMBERG.

OF NE? YORK, N. Y., ASSIGNOR-S, BY DIRECT AND MESNE ASSIGNMENTS, OF ONE- THIRD TO WALTER K. DEAN, OF NORTH GIRAR'D, PENNSYLVANIA, AND TWO- THIRDS TO SAID JOHN R. DEAN.

PUNCHING-IVIAGHINE.

To (ZZZ whom it may concern Be it known that we, JOHN R. DEAN, a

citizen of the United States, residing at,

York and State of New York, have invented I new and useful Improvements in Punching- Machines, of which the following is a specification.

This invention relates to punching machines and consists in certain improvements in the construction thereof as will be hereinafter fully described and pointed out in the claims.

it'i ore particularly the invention relates to punching machines especially adapted for punching garment stays as A formed with alternate slots as A extending inwardly from opposite sides of the stay.

The object of the invention is to provide amachine which will simplify the punching of such stays and improve the product.

The details of the invention will appear from the specification and claims.

The invention is illustrated in the accompanying drawings as follows Figure 1 shows a side elevation, partly in section of the punching machine. Fig. 2 is a section on the line 22 in Fig. 1. Fig. 3 is a plan view of the machine, the driving mechanism being removed. Fig. 4 is a side elevation partly in section on the line 44. Fig. 5 is a section of the clutch mechanism, forming part of the feeding apparatus on the line 55 in Fig. 6. Fig. 6 is a section of the same parts on the line 66 in Fig. 5. Fig. 7 is a section on the line 77 of the die clamps on the punching head. Fig. 8 is a section on the line 88 in Fig. 7. Fig. 9 is a section on the line 99 in Fig. 7.

1 marks the base of the machine, 2 the die block and S the female die. This has the openings 4 these being slightly off-set as shown in Fig. 1. A guide plate 5 is arranged over the die 3 and has guide openings 6 corresponding to the openings 4. The punching head 7 has the yoke 8 from which extends the guide pins 9. These enter the openings 10 in the block 2 and guide the punching head. The male dies 11 and 12 are formed of thin strips of steel and these Specification of Letters Patent.

Application filed November 22, 1913.

Patented Oct. 6, 1914.

Serial No. 802,408.

are held in an especially designed clamp. The dies are off-set so as to conform to the openings 4. The inner sides of the die that is to say that side of the die which is next to the inner end of the slot formed in the stay is slightly longer than the remainder of the cutting surface of the die forming a point 13 and the cutting edge 14 as clearly shown in Fig. 9. This is necessary in that by beginning at the inner end of the slot in this manner and then following out the cutting with a shearing action the material of the stay is not distorted so as to interfere with the regularity of the slots. We form a guide extension 15 at the outer side of the die and this moves into the slot 4 at the same time that the point 13 enters the part 4. It will be understood, however, that this is out side of the stay and simply forms a guide. This arrangement of the dies, that is, having a plurality of dies off-set so as to make the alternate slots extending inwardly from opposite sides of the stay and arranging these dies in series so that the front die is at one edge of the stay and the rear die is at the opposite edge of the stay makes it possible to punch sections of the stay and then simply move the stay forward and obtain a continuity in the arrangement of the slots. It is desirable to have the stay punched entirely from one side in that the condensing of the metal due to the punching action stiffens the stay in one direction and adds to its resiliency. It is also necessary that the crossings formed between the slots should be of equal cross section as otherwise the smaller cross section would be subjected to undue strain and the stay would soon break at the point of this weakness. By punching the stay in sections this regularity may be more nearly attained and the punching may be done from one side of the stay and by punching from the center outwardly the separating of the stay so as to interfere with the proper spacing is largely obviated.

The clamp for holding the punching dies 11 and 12 comprises the head 16 on which are arranged the jaws 17. The dies are placed in the slots 18 and the jaws force the dies against the inner surface of these slots. The aws 17 are pivoted on pins 19 and have cam surfaces on their lower faces which onstay may be punched in sections forming a continuity in the arrangement of the slots, said dies being longer at their inner sides and severing the metal of the stay from the inner ends of the slots outwardly, said dies being also provided with guide extensions at their outer sides.

l. In a punching machine for forming garment stays having slots formed therein extending alternately inwardly from opposite sides of the stay, the combination of a die actuating head; a plurality of punching dies oil-set to form slots extending from opposite sides of the stay, the forward die being at one side of the stay to be punched and the rear die at the opposite side of the stay to be punched whereby the stay may e punched in sections forming a continuity in the arrangement of the slots; and means for feeding the stay to correspond to the section punched.

In a punching machine for forming garment stays having slots formed therein extending alternately inwardly from opposide sides of the stay, the combination of a die actuating head; a plurality of punching dies oii -set to form slots extending from opposite sides of the stay, the forward die being at one side of the stay to be punched and the rear die at the opposite side of the stay to be punched whereby the stay may be punched in sections forming acontinuity in the arrangement of the slots; and feeding means operating rotatively on the stay.

6. In a punching machine for forming garment stays having slots formed therein extending alternately inwardly from opposite sides of the stay, the combination of a die actuating head; a plurality of punching dies off-set to form slots extending from opposite sides of the stay, the forward die being at one side of the stay to be punched and the rear die at the opposite side of the stay to be punched whereby the stay may be punched in sections forming a continuity in the arrangement of the slots; means for feeding the stay forward intermittently as punched; and means for adjusting the distance which the stay is fed at each cycle of the machine.

7. In a punching machine for forming garment stays having slots formed therein extending alternately inwardly from opposite sides of the stay, the combination of a die actuating head; a punching die carried by the head and having the side toward the inner end of the slot forming the stay longer than the opposite side whereby the metal is severed at the inner end of the slot and the cutting action continued from the inner end of the slot toward the outer end of the slot.

8. In a punching machine for forming garment stays having slots formed therein extending alternately inwardly from opposite sides of the stay, the combination of a die actuating head; a punching die carried by the head and having the side toward the inner end of the slot forming the stay longer than the opposite side whereby the metal is severed at the inner end of the slot and the cutting action continued from the inner end of the slot toward the outer end of the slot, said punching die having a guiding extension on its outer side.

In testimony whereof we have hereunto set our hands in the presence of two subscribing witnesses.

JOHN R. DEAN. AUGUST WV. HOLMBERG.

Vitnesses:

R. A. BAKER, CHARLES R. NILsoN.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. 0. 

